Pneumatic self-playing musical instrument.



L. B. DOMAN.

PNEUMATIC SELF PLAYING MUSICAL INSTRUMENT,

APPLICATION FILED APR. 30,-1908.

'lill' am /41L lg vacuum may be maintained in the windbetween the heel and toe of sgwsvrinmgs'* l "firms:

lt; il. LEV/'l5 B. DCPMK, OF lLBllDGE, NEW YOEK.

PNE

no. ela/seo.

Application filed April 3o, 190s?.

To all whom 'it Magcom-cem:

Be it known that l, Lewis lil. Denali, of ltllbridge, in the county of Qnondaga, in the State of New York, have invented new and useful linproveinents in Fneninatic Sell .Playing Musical lnstrunents, ot' which theA following, taken in connection with the acconipanying drawingsa is a full, clear, and exact description. y

rl"liis invention relates to certain improve ments in pneumatic self playing musical. instruments and refers more particularly to the pedal action for operating` the main bellows or exhaust bellows, somewhat siinilar to that set forth in my pending application llo, 329,692, led August 8, 1906. ln instruments of this character it is customary to provide tivo pedals which are connected by links or other suitable means to corresponding exhaust bellows by which a partial chest and other pneumatics of the instrument, The links connecting the pedals to bellows are usually pivoted to the under side or" the pedal and suitably connected to l the movable side of the exhaust bellows and the main object of my present invention is to enable the connection between the pedal and bellows to be adjusted to Variable points the pedal, for the purpose of producing variations in pressure required to operate the pedals according to the desire ol' the operator. A

ln some instances heavy pressure and consequent slow pedal movement may be desired by some operators, While other operators would prefer a lighter pedal pressure with a more rapid action of the pedals, and present invention is designed to provide for such adjustment of the connectie i between the pedal and bellows, prot-lune one desired etl'ect.

Other more specific objects and uses will be hereinafter set forth.

ln the drawings-Figure l is a side elevation of my improved pedal action shown as operatively connected to an exhaust bellows ot' a self-playing instrument, the equalizer and portions of the instrument being` shown in dotted lines to more clearly bring out the relative arrangement of the parts of my invention as associated with the instruye Figs. 2 and 3 are enlarged scctio taken respectivelyT on l.' Fig. l.

.ln order to more Speccntion oi Lett-ers Patent.

Patented Feb. 16, 3.309.

sans?. No. 430,175'.

practie-ibi invention, l .b ave shown by dotted lity of iny lines, a portion ot' piano case *lin the bose olf' which placed a suitable ex lionst bellows -Qh usually in an upright position7 and comprises a fixed member 3* and a movable member l hinged t; the upper end of the fixed nieinber e, and having' its lower endv movable to and from said lined vmember at the rear thereof., T he liXed niernber -iis secured at its lower end to a bracket 5- on the base of the piano case, 'while the lower end ot the movable member is provided with a bracket -6-, having an arin -7 projectforwardly under the lower edge oit the lined. member f3-1 pedal *S* is shown as tulerunietl A its el/L- at its forward end upon a suitable support -'l0-, which. is rigidly secured to an up'vardiy folding arm -ll-, the latter being' pivotetl aly its rear end at Nn12h-to a forwardly extending arin -l3-, on the bracket -5*. rlhe pedal flis normally held in an upward and rearwardly inclined position, as shown in liig -l-, by n suitable reti-acting means hereinafter described, which also serves to retractihe movable side ot the bellows -2-g said pedal -8- being provided on its under side with suitable guides or loops hiv-lrigid thereon and spaced some distance apart from each other between the heel and toe of the pedal An acljustingbar 15` is movable lengthwise in the guide loops -lf-i--, and is provided with a series ot' apertuil *18H3 either of which is adapted to receive a locking-pin or adjustable abutment, -l7-, the latter adapted to eiig'age or abut against the rear side of the front guide -ll-, as best seen This adjusting bar l5- tnerelore extends lengthwise under the longitudinal center of the pedal eS-i and its upper rear end is pivoted at M13, to the liront end of a link -lQ-g the rear end ot' said link being1 pivoted. at -20 to the froi'it end of the forwardly extending" arm -7` oi the bracket ing an adjustable connection between the pedal -8- and movable side of the exhaust bellows -2-. lt is now clear that by arl- ;insting the ar -l5- lengthwise ot the pedal .in the guides --ll7 the pivotal con- 'Fl-e with the link -LQ- will be to or farther from. the ulcrum i pedal, thereby establishing` a Lge between the pedel vand movable side of theexhaust bellows -,-2-. For example, when the operator desires a heavy pressure and consequent slow action or' the 'pedallmeehanisim the adjusting bar ,-*15- is moved rearwardly, thereby throwing the load connected with the pivotal point 1S- farther from ythe fulcrum point-#9- oi thev pedal 8, the pin -1'Z- being inserted in the proper aperture -13 to hold or lock the adjusting bar -l5- in this position. On the other hand, if a lighter pressure is desired, the adjusting bar -l5-- may be moved or adjusted forwardly, thereby bringing the load connected to the'pivot -18 Closer to the fulerum T59-, thus diminishing the power re-f quired to operate the exhaust device. In like manner, the bar -lmay be adjusted to bring the loader pivot -l8- to any intermediate position by simply removing the locking bolt -17- and reinserting it in one or the other of the intermediate holes 16%, which enables the operator to obtain any pressure desired, that is, light, heavy or medium. lt will, of course, be understood that when the load at the pivot n18 is adjusted to its extreme outward limit, the leverage and pressure vrequired to operate the pedal, will be materially inereased,`and its action will therefore be slo'w, while on thepther hand, if the point of applying the load at #1S- is adjusted to its extreme inner position nearer the 'u'lcrum 9 the leverage and pressure required to4 operate the exhaustive device will be materially diminished and its action will therefore 'be .much more rapid.

' In other words, in one eXtreme position olf the adjusting bar 415-, a minimum sp'eed oi:aet1on 'is obtained, with a maximum power, while in the other extreme position,

in the adjusting of said bar a maximum speed or' action is obtained'with a minimumloops are spaced apart a'sutlicient distance to erase-e allow the bar -15- with the pin iT-w therein to slide endwise when the pedal ae-- tion is folded and unfolded to and from its inoperative position as shown by dotted' lines Fig. l, without removing the pin, such shifting movement being made to conform to the relative positions of the ulerums -12- and -20.

7What I claim is:

l. In a self-playing musical instrument, an exhaust bellows, a pedal tulerumed at one e n d, and means adjustable lengthwise of the pedal for transmitting motion from the pedal to the movable side of the bellows. l

2. In a self-playing musical instrument, an exhaust bellows, a pedal ulcrumed at the heel thereof, and a connection between the' bellows and pedal having a iexing joint adjustable lengthwise of the pedal.

In va self-playing musical instrument, an exhaust bellows, a pedal fulerumed at its heel, amernber adjustable lengthwise of the pedal, means for locking said member in its adjusted position, and connections between said member and movable side of the bellows.

Il. ln a self-playing musical instrument, an exhaust bellows, a pedal tule-ruined at its heel, a bar slidable lengthwise of the pedal, means for hoiding the bar in its adjusted position, and connections between said bar and movable side of the bellows.

5. Ina self-playing musical instrument, anexhaust bellows, a pedal, guides on the pedaL-a sbar adjustable in said guides lengthwiseA of the pedal, means to lock thebar in its adjusted position, and connections betweensaid bar and movable side of thecbel- QG. In a self-playing musical instrument,

Aanexhaust bellows having ixed and movable sides, an upwardlyswinging supportI toldable toward and from the bellow's, a

pedal fulcrumed at. its heeluponsaid support and Joldable upwardly therewith, guides on the pedal, aleen adjustable in said guides lengthwise of the pedal, means for locking said bar in itsadjusted position, a bracket onthe movable sident the bellows, and a link having one end pivoted to said bar and' its other end pivotedto the bracket.

' In, witness whereof l have hereunto'set my hand this 20th da of April 1908.

LWIS B. DOIMN.

Witnessem j H. E. Crimen, A v

C.. M. McCommon,- 

